Heating and ventilating system for vehicles



Ma 18, 1937. M. P. BLOM'BYERG 2,080,757 HEATING. AND VENTILATING SYSTEM FOR VEHICLES a Sheets-Sheet 1 Filed Dec May 18, 1937.

M. P.- BLOMBERG HEATING AND VENTILATING SYSTEM FOR-VEHICLES 8 Sheets-Sheet 2 Filed Dec. 17, 1934 y 8,1931- M. P. BLQMBE'RG- 2,080,7 1

HEATING AND VENTILATING SYSTEM FOR VEHICLES Filed Dec. 17, 1934 8 Sheets-Sheet 3 y 3 M. P. BLQMBERG 2,080,757

HEATING AND VENTILATING SYSTEM FOR VEHICLES Filed Dec. 17, 1954 8 Sheets-Sheet 4 May 18, 1937. M. P. BLOMBERG HEATING AND VENTILATING SYSTEM FOR VEHICLE Filed Dec. 17, 1954 Sheets-Sheet 5 May 18, 1937.

M. P. BLOMBERG HEATING AND VENTILAT-ING SYSTEM FOR VEHICLES Filed Dec. 17. 1954 8 Sheets-Sheet May 18, 1937. M, p. BLQMBERG 2,080;757

HEATING AND VENTILATING SYSTEM FOR V EHICLES Filed Dec. 17, 1934 8 Sheets-Sheet'7 May 18,- 1937. M. P. BLOMBERG HEATING AND VENTILATING SYSTEM FOR VEHICLES Filed Dec. 17'. 1934 8 Sheets-Sheet 8 Pat nted May 18 1937 v v i 2 0 751 UNITED STATES PATENT OFFICE;

HEATING: VENTILATING; SYSTEM'. FOR VEHICLES PL. Blomberg, Chicago, Ill, assignor tw llnllmrm-Standard Car" Manufacturing Com:- pany', a comoration of Delaware I Application December 11, 1934, Serial no. tamer r2 Claims. (01. 98-10) Street cars, suburban railway cars, elevated damper arrangement whereby the air withdrawn trains, subway trains, buses, and in general that from the car interior may be either lie-circulated class-of vehicles which daily carry the vast army or exhausted from the car; of commuters to and from the larger cities, re- Fig. 9 is a perspective view of the damper; I

quire high capacity ventilating and heating sys-, Fig. 10 is a fragmentary, sectional view taken '5 terns to satisfactorily handle the load imposed on on the line Ill-40 of Fi 8; them by conditions, of service. The conventional Fig. 11 is a plan section showing the floor duct deck ventilators and heating radiators are grossly arrangement in some detail; inadequate for peak loads. s I Fig. 12 is a transverse, sectional view through 10 The principal object of this invention, therethe end of the heater box, the section being taken '10 fore, is to provide a heating and ventilating sys- 0n the line l2l2 of Fig. 11 and showing partem for vehicles of this class which has the proper ticularly the centrifugal fans which move the capacity for handling the heavy loads occasioned air through the o d s ha t to e by overcrowding of the vehicles, frequent stops distributing ducts on opposite sides of the box;

15 during which the vehicle doors are opened wide to Fig- 3 is a longitudinal, Vertical. Sectional w 15 acceleratetheloading andunloadingofthe'vehicle; lZhIOllgh the heater the View being taken on which is readily converted from a system of venthe line [3-43 of Fig- 11;- tilation alone to a system which combines heat- Fig. 14 is a transverse. sectional View taken ing with ventilation; which recirculates a large throughthe receiving end of the heater box, the

proportion of the air in the vehicle when heatsection being taken on the line M-ll of Fig. 11; 20 ing is required'in order to cut down heating costs; 5 is afragm y Vertical, sectional View and which advantageously utilizes space in and taken on the line l5--l5 of Fig. 11; about the vehicle for locating air ducts, heating g- 16 is a de V Of the elbow ou equipment, and other appurtenances in thesy which the airis led from the inside floor duct tem so that there is no encroachment on passent0 the heater box, the section being taken on 25 ger space 'and weight-isreduced to a minimum. the e |5|5 of There are other objects and advantages inheris a V w Corresponding to i 2 bu ent in the illustrative embodiment of the invenshowing a s htly e e t bod of the tion shown in the drawings, in which--' invention;

Fig. 1 is-a side elevational view of a multi-sec- 8 s a View eellespelidilig 3 but 30 I tion articulated car equipped with a heating and jmodified to show the embodiment of Fig. 1'1; ventilating system which follows the teachings 19 s a diagrammatic, p pect v V ew of this invention; showing the arrangement of air ducts, blowers, Fig. 2 is a longitudinal, sectional view through heaters, etc. in the modified form of the inven- 5 the first two car sections'and a portion of the tion? third, the section being taken on the line 2-2 of 20 is a e ta y; vertical, sectional view 1 and win the floor duct arrangement; showing the location of the distribution duct Fig. 3 is a fragmentary, longitudinal section above the floor level in the modified form of the taken on the line 3--3 of Fig. 1 and showing the invention;

40 upper duct arrangement; Fig. 21 is an end elevational viewtaken on the 40 Fig. 4 is an end elevational view taken on any e of i one of the section lines 4-4 shown in Fig. 1; For the purp of disclosure, S e ted em- Fig. 5 is a somewhat diagrammatic, fragmenbed s e Shown a p ied to a titary sectional view taken on the line 5-5 of Fig. t a u d car t u rly adapt d for 2; v use in subways or on elevated structures, but it 45 Fig. 6 is a diagrammatic, perspective view f will be understood'that the invention may be vathe heating and ventilating system disassociated rious y modified within the scope ft e appended from the car structure; claims which are to be construed as broadly as Fig. 7 is a perspective view showing the arthe prior art will permit. 5o rangement of the air ducts andauxiliary equip- The car framing, inso far as it is pertinent to rnentat the end of the car, parts of the view bethe heating and ventilating system, includes a ing broken away to more clearly show the strucplurality of longitudinal sills 30, 3! and 32 (seeture; f Fig. '7), fabricated side sills 33, end sill castings Fig. 8 is a longitudinal, sectional view taken on 34 to which the longitudinal sills and side sills ..5 the line 3-8 of Fig. '7 showing particularly the are joined, door end posts 35 built-up from a form box columns, which include air spaces 36 and 31 connected by openings 38, an anti-telescoping plate 39 extending across the car and resting on a portion of the door end posts, corner posts 40, which, like the door end posts, are fabricated from a plurality of irregularly shaped metal sections, top chords 4| which serve as -side plates and extend from corner post to corner post, and a top sill 42 comprising side members 43 of irregular shape,- and a bottom closure plate 44 which with the top sheathing 45 forms a box girder, the interior of which is used in the heating and ventilating system of this invention as a duct for withdrawing air. from the interior of the car, openings 46 being provided for this purpose.

, A schematic arrangement of the heating and ventilating system of Figs. 1-16 inclusive is shown in Fig. 6. Briefly, the system comprises the overhead duct 41 formed by the box girder top sill 42, a pair of vertical ducts 48 and 48 at on end nected through a short horizontal duct section 50 to the exhaust side of ,a fan 5| that withdraws air from the car interior through the duct 41.

Under certain conditions 'of usage, the vertical.

duct 48 is closed off from the duct 41 by means of a damper 52 which then permits the air drawn from the car interior to pass through an elbow duct 53 to the outside atmosphere. I

The vertical ducts 48 and 48 communicate with longitudinal ducts 54 just below the floor line which lead to-a heater box 55 in which suitable heating coils 55 are located. A pair of centrifugal fans 51 withdraw air from the heater box 55 and discharge through ducts 58 into distributing ducts 59 located on opposite sides of the box and outside of the ducts 54. Branch ducts 50, 5| and 82 then deliver the air into the car interior.

Referring now to Fig. '7, the bottom and top plates 44 and 45, respectively, of the top sill 42 terminate at the partition 53, but the irregularly shaped side members 43 pass through thepartition into a receiving chamber 64.

are provided in the sides 43 of the top sill and Openings 55 the large openings provided by omitting the plates 44 and 45 within the chamber 54 permit the air in the duct to pass freely into the chamber.

The fan 5| draws air from the receiving chamber 64 through one of its side walls 66 and delivers it to the exhaust duct 53when the damper 52 is in the position shown in Figs. 7 and 8, or to the they constitute a single duct.

An air inlet as is located in the ducts 4a and 49 adjacent the top of the doorway 88. .(See Figs. 4, 6 and 10.) The inlet is adiustable as shown in Fig. 10 so that its effective opening may be varied to suit requirements. Theinlet in the duct 48 may be completely closed so that in the wintertime when heating is required, the duct 48 may be usedexclusively for recirculated air, while the duct 49 is used for admitting fresh air. Handies 18 are indicated in Fig. 6 for manipulating the intake shutters.

Door end posts 35 have openings 1| through their inside walls to connectthe ducts 48 and 43 to boxes 12 which in turn are connected by short sections ofcurved ducts to the longitudinal floor ducts 54 which extend from the end of the" car to the heater box 55 between longitudinal; sills 30 and 3|. Insulation 12 covers the ducts to prevent a waste of heat.

At a point adjacent to the inlet end of the heat-' er box 55, the ducts 54 communicate through a flexible connection 13 with the interior of the heater box, bafiies 14 being provided in the duct and at the entrance of the heater box to assist the air in changingdirection.

Similar bailles are used elsewhere in the various I ducts to reduce air friction in the ducts.

The heater box is suspended by brackets 15 from the underside of the car frame and the heating element 58 is preferably held in place by bolts 18 equipped with wing nuts 11 (see Fig. 13).

The box 55 is slightly enlarged at the discharge end to accommodate the blowers 51. The blowers are placed side by side, see Fig. 12, and discharge outwardly into the transverse ducts 58 which connect with the distributing ducts 53. An adiustable valve 18 is placed in each distributing duct at the place where it connects with the transverse duct 58 in order to initially determine the relative quantities of air which are to be delivered to the two ends of the distributing duct. It may be adjusted in any suitable manner.

The branch ducts 50, GI and 82 which connect the distributing ducts 58 with the car interior,

are located at places where the air may be discharged into the car interior without creating a draft; the ducts 50 communicating with the car interiorthrough grilles 13 located at opposite ends of an enclosure 88 under the. side seats 8| (see Flgs. 5 and 11): the ducts 5| discharging through grilles 82 under the end seats 83; and the ducts 82 communicating with the car interior under the inside transverse seats 84 through grilles 85.

In the summertime when heating is not required, the damper 52 is set so that the air withdrawn from the car interior through duct 41 is discharged to the outside atmosphere through the exhaust duct- 53. Under these conditions} it is desirable to have the greatest possible quantity of fresh air delivered into the car and the handles 18 are, therefore, turned to open the air inlets in the ducts 48 and 48. The fans 51 then draw fresh air from the outside through the ducts 48 and 49, the longitudinal ducts 54 and the ducts 55, a'nd deliver it into the car interior through the transverse ducts, 58, distributing ducts 58 and the branch ducts 88, 8| and 82. r k

Obviously, when the heating coils'are not required for a period-of several months, they may be removed so as to reduce air friction through the box 55. Otherwise, they remain inoperative ready for use when heating is required. When the outside air is slightly chilly, and some heating is desirable, the same arrangement and setting,of dampers may beused with the heating coil in operation to take the chill the air.

In the wintertime, the damper 52 is set so as to divert the air drawn from the duct 41 into the vertical duct 48 and the air inlet 58 in that duct is then closed to the outside atmosphere. The

onto! 'fresh inlet in the other duct 49 may be fully open or partially open, according to the freshv air required in the car for ventilation purposes.

The box 55 then receives air from the car interior through-one of the longitudinal ducts 54, and fresh air through the other duct 54, and the temperature of the air can be readily controlled by adjusting the current through the heating- ,coil, or the number of heating coils in operation,

and by regulating the amount of cold air taken in through the fresh air inlet in the duct 49.

It is also possible to use the duct 48 for a mixture of fresh and re-circulated air when the car is .overcrowded and an exceptional amount of fresh air is needed.

It will thus be seen-that the system of'this invention is very flexible in its ability to meet the requirements of service conditions. Furthermore, the ducts are located so that "they do not encroach upon passenger space, and make use of passageways formed by parts of the car struc- 6 the .seats and the heating units instead of being located beneath the car body are located in boxes 81 adjacent to the bases of the door end posts.

The .boxes also include fans 88 for drawing air downwardly through the vertical ductsv 48 and 49 and forcing it through the heating coils and thence into the distributing ducts.

In the modified form of the invention, both of the vertical ducts 48 and 49 may be used ior recirculating air, dampers 89 being provided to control the flow 01 air into these ducts. when the dampers are positioned so as to close the openings 99 (Fig. 19) the vitiated air in the car is discharged by static pressure ln-the car through exhaust grilles 9| located above the doorway 69.

What is claimed is: 1

1. In a ventilating system. for railway cars, an overhead duct, a floor duct, a vertical duct in an end wall of the car joining the said ducts, means for moving air through the ducts, an air outlet associated with the overhead duct for exhausting air to the atmosphere, a fresh air inlet associated with the vertical duct for admitting fresh air therein, and valves for controlling the passage of air through said outlet and inlet.

2. In a ventilating system for railway cars, an overhead duct, a floor duct, a vertical duct in an end wall of the car joining the said ducts, a blower interposed in the air circuit between the overhead duct and the vertical duct, and means for exhausting air from the blower either to the vertical duct or to the outside atmosphere.

3. In a ventilatingsystem for railway cars, an overhead duct, a floor duct, a vertical duct in an end wall of the car joining the said ducts, a blower interposed in the air circuit between the overhead duct and the vertical duct, and means for exhausting air from-the blower either to the vertical duct or to the outside atmosphere, and a fresh air inlet for introducing fresh air into the vertical duct.

4. In a ventilating system forrailway cars, an overhead duct, a floor duct, a vertical duct joining the said ducts, means for moving air through the ducts, and valve means interposed in the air circuit between the overhead duct and the verti-j cal duct for selectively placing the overhead duct either in communication with the outside airor with the vertical duct. I 5. In a ventilating-system for railway cars, an

overhead duct, a floor duct, a vertical duct joining the said ducts, means for moving air through the ducts, and valve means interposed in the air circuit between the overhead duct and "the vertical duct for selectively placing the overhead duct either in communication with the outside :or with the vertical duct, said air moving :means being located at substantially floor level.

6. In a-ventilating system :Eor railway roars, :an

"overheadnduct, a floor duct, a vertical ductiin an end wall of the car joining the said iducts, a blower, and an air outlet associated with the overhead duct for exhausting vitlated air from the car, a blower associated 'with the floor duct or moving .air through the vertical and floor (ducts,

an air "inlet in the vertical duct, and means :tor

controlling the size ofathe an outlet and inlet. I 7. A ventilating system :for railway cars comprising an overhead duct running longitudinally of the car, floor ducts on opposite sides of car, a mixing chamber, a of vertical ducts at one end oi! the car both oi. which communicate-with the mixing chamber through the floor ducts and one of which communicates with the overhead duct, an an outlet associated with the overhead duct, air inlets associated with the ver-- tical ducts, valves for controlling said outlet and inlets, and means for moving air through said ducts.

8. In a ventilating system for railway cars, a closed air circuit including the -car interior, an overhead duct, a vertical duct, and a floor duct,

-means for moving air through said ducts, means for exhausting air from the car including the overhead duct, and an air outlet at one end of the duct, and means for introducing fresh air into the car including the floor duct, the vertical duct and an air inlet in the vertical duct.

9. In a ventilating system for railway cars, a closed air circuit including the car interior, an overhead duct, a vertical duct, and a floor duct, means for moving air through said ducts, means for exhausting air from the car including the overhead duct, and an air outlet at one end of the duct, and means for introducing fresh air into the car including the floor duct, the vertical duct, an air inlet in the vertical duct, a heater associated with the floor duct, and a supplemental air circuit including a-second vertical duct and a second horizontal floor duct, and' an air inlet associated with said second vertical duct.

10. In a heating and ventilating system for rail- 11. In a ventilating system for cars, an upper U and a lower conduit extending along the upper and lower portions of the car, a connecting con- I duit in communication with said upper and lower conduits, air moving means in said upper and lower conduits for circulating air through said car and conduits, and intake and discharge passages between said means for introducing fresh air into said system and for discharging foul air duit for lorcing air therethrough. and means for' from said car. v selectively directing all or a portion 0! said air 12. In a railway car having a hollow door post,

into said hollow door post or through a port into a ventilating system for said car comprising upthe atmosphere exterior of the car. 5 per and lower conduits in communication with e the interior of said post, a tan in said upper con- 5 MARTIN P. BLOLIBERG. 

